FDM based 3D Printers are typically limited to printing in different types of plastics. They work by usually melting ABS or PLA plastic in a similar fashion to how a hot glue gun works. Recently, however, we have begun seeing more and more materials become available for these 3D printers.
(…weiter auf 3dprint.com)
BCN3D+ Paste Extruder printing mashed potatoes
Our Paste Extruder, assembled on a BCN3D+. Printing Bulbasaur in mashed potatoes with green pigment
(Quelle: Youtube / RepRap BCN)